and now it is general john allen, running the war in afghanistan. together, a devastating blow to a country at war. >> anything that takes your eye off the ball is a distraction. and it will have some effect. >> reporter: officials say it started early this summer when kelly received anonymous e-mails accusing her of flaunting a friendly relationship with military brass in tampa. she called the fbi, which traced those e-mails back to the computer of paula broadwell, where they discovered the evidence of broadwell's affair with petraeus. broadwell, seen tonight at her brother's home in washington, sipping wine and having dinner, admitted her affair with petraeus but has not commented on her e-mails she allegedly sent to the other woman, jill kelly. there is more, abc news learned that general allen received an anonymous e-mail traced to broadwell, claiming jill kelly was a seductress. a further look by the fbi into kelly's e-mails revealed hundreds between kelly and allen. 20,000 to 30,000 pages of communication in all. secretary of defense leon pane